Bootstrapper unable to detect correct redist dll when running PIX

UE - Foundation - Core - Jun 13, 2024

This happens because the bootstrapper executable tries to verify that the VC redist DLLs have the expected version. Unfortunately, when running under PIX, it finds the msvcp140_2.dll file bundled wi ...

Lyra: GA_Melee uses disallowed NetMulticast RPC for melee impact sound

UE - Gameplay - Gameplay Ability System - Jun 13, 2024

The melee gameplay ability GA_Melee uses a NetMulticast RPC which isn't allowed and causes a blueprint validation error: GA_Melee.uasset: Gameplay Abilities are not replicated to Simulated Proxies ...

Infinite saving loop with material attributes and VT

UE - Rendering Architecture - Materials - Jun 12, 2024

UDN: [Link Removed] ...

Usd wrapper uses TCHAR_TO_ANSI conversions causing path issues with basic extended ASCII character set

UE - Editor - Content Pipeline - USD - Jun 12, 2024

It seems that a simple change from TCHAR_TO_ANSI to TCHAR_TO_UTF8 in UE::FUsdStage OpenStageImpl() fixes the issue. ...

UnrealFrontend does not store the last project used.

UE - Platform - Console - UnrealFrontend - Jun 12, 2024

In pasts unreal engine versions like 5.2 or 5.3, when you loaded a project with UnrealFrontend, the uproject was saved inside the Engine.ini file. In version 5.4 it does not get saved and you need t ...

Output velocity on translucent objects does not work properly

UE - Rendering Architecture - Materials - Jun 12, 2024

From UDN: [Link Removed] There is a bug in the output velocity for translucent objects in Unreal Engine 5. Specifically, when a material instance has the "output velocity" override flag enabled, bu ...

Unable to fix up redirector of assets used in level instances

UE - World Creation - Worldbuilding Tools - Level Instances - Jun 12, 2024

If another persistent level is open, the fix up can work. ...

Address Sanitiser in MSVC incorrectly identifies a non-virtual destructor, but the class is not polymorphic

UE - Rendering Architecture - Shaders - Jun 11, 2024

When built with Address Sanitiser, the engine can except in FShaderPipeline::FindOrAddShader on deletion of the Shader pointer. This appears to be in error as FShader is asserted to be non-polymorp ...

Simulate motion vectors can fail on camera cuts

UE - Anim - Sequencer - Jun 11, 2024

r.MotionVectorSimulation 1 should simulate motion vectors when cutting cameras, but this appears to be broken on some loops. ...

AlwaysTickPose is prone to double firing notifies in a dedicated server setup.

UE - Anim - Gameplay - Jun 11, 2024

See UDN for more info: https://udn.unrealengine.com/s/question/0D5QP00000MfU8l0AF/uanimnotifynotify-is-called-twice-for-the-same-notify-on-server-in-a-multiplayer-game ...